Xylem MM 307H User Manual

Series 101-A Electric Water Feeder

INSTRUCTION MANUAL

MM-307H

Applications:

For use on low pressure boilers with cold water feed. The Series 101-A can be used with mechanical or electronic low water cut-off controls.

WARNING

Do not use automatic water feeders with manual reset LWCO’s.

Failure to follow this warning could cause flooding, property damage, personal injury or death.

SPECIFICATIONS

Maximum Water Pressure: 150 psi (10.5 kg/cm2)

Maximum Boiler Pressure: 25 psi (1.76 kg/cm Maximum Boiler Size: 5000 sq. ft. EDR

2,350,000 BTU/HR

Electrical Ratings

Model Voltage Full Load

101A-120 120V 40 VA

101A-24 24V 40 VA

Output Capacity

)

with

QUICK CHANGE

Cartridge

Flow Data

Pressure Differential Flow Rate

psi (kg/cm2) gpm (lpm)

5 (.4) 1.4 (5.3) 10 (.7) 1.7 (6.4) 20 (1.4) 2.1 (7.9) 40 (2.8) 2.9 (11.0) 60 (4.2) 3.4 (12.9) 80 (5.6) 4.0 (15.1)

NOTE: 101A-24 includes a transformer with 120 volt primary and 24 volt/50VA secondary.

CAUTION

WARNING

• Before using this product read and understand instructions.

• Save these instructions for future reference.

• All work must be performed by qualified personnel trained in the proper application, installation, and maintenance of plumbing, steam, and electrical equipment and/or systems in accordance with all applicable codes and ordinances.

• Boiler manufacturer schematics should always be followed. In the event that the boiler manufacturer’s schematic does not exist, or is not available from the boiler manufacturer, refer to the schematics provided in this document.

• To prevent water damage check to make sure there is adequate floor drainage capacity. Check all components in the system to insure that they will not leak in the event of an overfeed condition.

• To prevent electrical shock, turn off the electrical power before making electrical connections.

California Proposition 65 warning! This product contains chemicals known to the

•

state of California to cause cancer and birth defects or other reproductive harm. Previous controls should never be installed on a new system. Always install new

•

controls on a new boiler or system.

Failure to follow this warning could cause property damage, personal inj ury or death.

CAUTION:

•



A more frequent replacement interval may be necessary based on the condition of the unit at time of inspection. McDonnell Miller s warranty is one (1) year from date of installation or two (2) years from the date of manufacture.

WARNING

FLOW  ARROW

6" (152mm)

6"

(152mm)

6"

(

152mm)

INSTALLATION

STEP 1 - Determine Where to Install the Water Feeder

IMPORTANT

Boiler manufacturer schematics should always be followed. In the event that the boiler manufacturer’s schematic does not exist, or is not available from the boiler manufacturer, refer to the schematics provided in this document.

Determine where to install the water feeder based on the following requirements:

a. It must be installed within eyesight of the boiler. b. A minimum 6” (152mm) clearance should be

allowed on all sides for servicing.

c. It must be installed in a horizontal pipe in the

upright position.

d. It should be installed on the cold water line.

Installation Diagram and Requirements a. Piping must be 1/2” (15mm) NPT

minimum.

b. Full port/full flow valves rated for the

pressure/temperature of the system and piping they are to be installed on.

c. Arrow on feeder casting must point in

WATER FEEDER

direction of flow into the boiler.

d. Install isolation valves and unions on

UNION

the inlet and outlet piping of the feeder for easier trouble-shooting and repair/ replacement.

FLOW ARROW

e. Install manual fill valve and bypass line

to allow for removal of the valve while the boiler is in service.

STEP 2 - Electrical Installation

IMPORTANT

NLE T VALVE

UNION

OUT LET VA LVE

UNION

CIT Y WATER SUP PLY

CHECK VALVE OR BACK FLOW PREVENTER (MAY BE REQUIRED BY LOCAL CODE OR ORDINANCES)

BYPAS S VALVE

CON NECT TO RETURN HEADER ON BOILER NOTE: DO NOT CONNECT DIR ECTLY TO BOI LER SHEL L

NOTE

Before connecting water feeder, operate boiler and check all safety devices.

NOTE

Unless otherwise noted, water feeder voltage should be the same as the LWCO and burner circuit voltage.

WARNING

LWCO

evel

• All work must be performed by qualified personnel trained in the proper application, installation, and aintenace of plumbing, steam, and electrical equipment and/or systems in accordance with all applicable

m codes and ordinances.

• To prevent electrical shock, turn off the electrical power before making electrical connections.

• To prevent an electrical fire or equipment damage, electrical wiring insulation must have a rating of

167˚F (75˚C) if the liquid’s temperature exceeds 180˚F (82˚C).

• To prevent an electrical fire or equipment damage, water feeder wiring must be on same circuit as all other

boiler controls.

Failure to follow this warning could cause property damage, personal injury or death.

a. Test the Low Water Cut-Off on the boiler.

b. Mark location of water level on sight glass where

Low Water Cut-Off turns off burner. This will be used as reference to test the water feeder’s operation.

c. Turn off all power to boiler and boiler controls.

d. Using a flathead screwdriver, remove electrical

cover plate.

f. Connect electric conduit to the water feeder’s electrical

enclosure.

g. Based on the water feeder and low water cut-off combination you are installing, select proper

wiring diagram and proceed to that page.

Water Feeder Low Water Cut-Off Page Model Model

101A-120 & 67 with 24V or 120V burner circuit ..........................................................................4

101A-24 & 67 with 24V or 120V burner circuit .......................................................................4-5

101A-120 & 67G with millivolt burner circuit ................................................................................5

101A-24 & 67G with millivolt burner circuit ................................................................................5

101A-24 & PS-802-24 ................................................................................................................6

101A-120 & PS-801-120 ..............................................................................................................6

+ 5 hidden pages